20565740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{953}}^1$

素因数の和:1058

約数の個数: 48

約数和(自身を含む): 47119968

約数和(自身を除く): 26554228

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 83, 130, 166, 260, 332, 415, 830, 953, 1079, 1660, 1906, 2158, 3812, 4316, 4765, 5395, 9530, 10790, 12389, 19060, 21580, 24778, 49556, 61945, 79099, 123890, 158198, 247780, 316396, 395495, 790990, 1028287, 1581980, 2056574, 4113148, 5141435, 10282870, 20565740]

約数ペア:

[(1, 20565740), (2, 10282870), (4, 5141435), (5, 4113148), (10, 2056574), (13, 1581980), (20, 1028287), (26, 790990), (52, 395495), (65, 316396), (83, 247780), (130, 158198), (166, 123890), (260, 79099), (332, 61945), (415, 49556), (830, 24778), (953, 21580), (1079, 19060), (1660, 12389), (1906, 10790), (2158, 9530), (3812, 5395), (4316, 4765)]